From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751366AbdGRFWg (ORCPT ); Tue, 18 Jul 2017 01:22:36 -0400 Received: from out1-smtp.messagingengine.com ([66.111.4.25]:60381 "EHLO out1-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750730AbdGRFWd (ORCPT ); Tue, 18 Jul 2017 01:22:33 -0400 X-ME-Sender: X-Sasl-enc: Ry/0B+NBrEe9ouFOmvQXababUGK8kspnf4kuO+Gg9abt 1500355352 Date: Tue, 18 Jul 2017 07:22:28 +0200 From: Greg KH To: Alan Tull Cc: "Luebbers, Enno" , Wu Hao , Moritz Fischer , linux-fpga@vger.kernel.org, linux-kernel , linux-api@vger.kernel.org, "Kang, Luwei" , "Zhang, Yi Z" , Xiao Guangrong Subject: Re: [PATCH v2 01/22] docs: fpga: add a document for Intel FPGA driver overview Message-ID: <20170718052228.GA10631@kroah.com> References: <1498441938-14046-1-git-send-email-hao.wu@intel.com> <1498441938-14046-2-git-send-email-hao.wu@intel.com> <20170713042520.GC28569@hao-dev> <20170714235914.GA17169@eluebber-mac02.jf.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.8.3 (2017-05-23) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jul 17, 2017 at 03:14:29PM -0500, Alan Tull wrote: > > Also, we're thinking that some operations require that you first "acquire > > ownership" of the respective device, which I believe maps more easily to > > open() and ioctls than sysfs. > > > > Thanks > > - Enno > > Yes, sysfs doesn't implement open/close so there's no clean way to > have one thing in userspace that owns the interface. It's a shame. No, that was by design :)